Are you looking to build your own camera? This complete kit has everything you need to get started. Simply choose the item or spot you want to place your camera and you can be streaming live footage within minutes! 
Features
 
Can be used as a DVR or WiFi unit
Audio/ Video Record Live streaming on Android or iOS smartphone
Record on to Micro SD Card (30 minutes per 1GB)
Motion Detection
Alerts via email or phone app
Able to operate in low light (1 lux or greater)
 
Technical Specs
 
3D Printed insert keeps all the internals in place
Video Resolution: 4K, 1080P, 720P
Recording Modes: Continuous video and motion detection
Viewing Angle: 90°
Storage: External MicroSD Card up to 128GB* (Class 10)
Power Supply: 5000 mAh battery or AC Power
Kit Dimensions: 2" x 2" x 0.5"
Includes
 
1 x 4K WiFi DIY Kit
1 x Instruction Booklet
1 x AC Adapter
1 x Micro USB cable
 
Compatible with
 
Android 4.0 and up
Apple iOS 7 and up